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Looking at your bug report you have found a workaround for the issue. Do you still have the issue if you don't follow your workaround? Have you upgraded to a later version of Ubuntu that has resolved the problem? I'd like to help you with the problem but I need updated information.
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Mark RooneyFeb 24 '12 at 10:16

Hmmm, I have upgraded to 11.10, and out of habit I still have the same workaround applied (I chose NOT to have the screensaver lock the screen). I will turn it on again and let you know if it still causes an issue for me.
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StratosgearFeb 24 '12 at 19:15